Every day I worry all day. 'Bout what's waitin' in the bushes of love.
Cuz somethin's waitin' in the bushes for us.
Somethin's waitin' in the bushes of love.

Technically, trebuchets are a type of catapult as they launch objects into the air. What most of us deem a catapult though, uses tension istead of a falling weight. Catapults generally used a large, springy piece of wood which would have been wound up. This then gives tension to the wood and when released the arm pulls up and hits a stop then releasing the projectile. Trebuchets, in contrast, use a weight which pull down a level arm, launching it up into the air. A sling is attached which is then releases the projectile. Trebuchets are generally capable of hurling great amounts of weight and became much more common in medieval warfare in later years.